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    • 5. 发明公开
    • Method for plastic deformation of non-ferrous metals
    • Verfahren zur plastischen Verformung von Nichteisenmetallen。
    • EP0100380A1
    • 1984-02-15
    • EP82304036.5
    • 1982-07-30
    • SUMITOMO ELECTRIC INDUSTRIES LIMITED
    • Uemura, Ikuji, c/o Yokohama WorksOno, Fumio c/o Yokohama WorksKamijo, Eiji c/o Itami WorksNishimoto, Tatsuya c/o Itami WorksHiguchi, Matsuo c/o Itami Works
    • C04B35/58
    • C04B35/597C04B35/584
    • Tools, essentially based on Si 3 N 4 , for the plastic deformation of non-ferrous metals and alloys. The tools can be applied in the following technological fields: pipe drawing, wire drawing, rod rolling, sheet rolling, extrusion, die casting, of metals such as: copper, aluminium, zinc, tin, nickel, cobalt, titanium, etc., and alloys thereof.
      The Si 3 N 4 based tools replace conventional tools (eg. cemented carbide, die steel, high-speed steel tools) for the said purposes and have improved properties such as: heat resistance, wear resistance, thermal shock resistance, etc. This enables the useful life of the tools to be prolonged as ; compared with conventional tools in said technological applications.
      The tools described herein are composed of at least 50% by weight Si 3 N 4 , have a porosity of below 10% and may contain one or more of the following additives: Al, Al 2 O 3 , AIN, BeO, Be 3 N 2 , MgO, Mg 3 N z , CaO, Ca 3 N 2 , TiN, TiO 2 , ZrO z , Hf0 2 , FeO, SiO 2 , SiC, MoC, WC, and/or oxides, carbides, nitrides, borides, silicides of Y, Ce, etc. (group III B of the periodic table - particularly Y 2 O 3 , YN and CeO z ).
    • 工具,基本上是基于Si3N4,用于有色金属和合金的塑性变形。 该工具可应用于铜,铝,锌,锡,镍,钴,钛等金属的管材拉丝,拉丝,棒轧,轧制,挤压,压铸等工艺。 及其合金。 为了上述目的,基于Si3N4的工具替代常规工具(例如硬质合金,模具钢,高速钢工具),并具有改进的性能,如:耐热性,耐磨性,耐热冲击性等。这使得使用寿命 与所述技术应用中的常规工具相比,延长的工具。 本文描述的工具由至少50重量%的Si 3 N 4组成,孔隙率低于10%,并且可以含有一种或多种以下添加剂:Al,Al 2 O 3,AlN,BeO,Be 3 N 2,MgO,Mg 3 N 2,CaO,Ca 3 N 2 ,TiN TiO 2,ZrO 2,HfO 2,FeO,SiO 2,SiC,MoC,WC和/或氧化物,碳化物,氮化物,硼化物,Y,Ce等的硅化物(元素周期表中的IIIBB-特别是Y2O3,YN 和CeO 2)。
    • 6. 发明公开
    • Manufacturing method for fiber reinforced silicon ceramics sintered body
    • Verfahren zur Herstellung von gesintertenfaserverstärktenSiliziumkeramikkörper。
    • EP0107349A2
    • 1984-05-02
    • EP83305641.9
    • 1983-09-22
    • SUMITOMO ELECTRIC INDUSTRIES LIMITED
    • Kamijo, Eiji c/o Itami WorksKomura, Osamu c/o Itami WorksHiguchi, Matsuo c/o Itami Works
    • C04B35/80C04B35/58C04B35/56
    • C04B35/584C04B35/565C04B35/806F02B3/06
    • @ This invention relates to silicon ceramics sintered body, such as heat resistant ceramics sintered body, especially silicon carbide and silicon nitride.
      Silicon carbide and silicon nitride among heat resistant ceramics are superior especially in heat resistance, impact resistance, and corrosion resistance, and effective in use as structural material or part material for a turbine or a diesel engine used in a high temperature gas, thereby having recently largely been interested in its development.
      The silicon carbide and silicon nitride both are compounds of covalent bonding property and recognized as materials difficult to sinter.
      Hence, they are not sole, but added with sintering additives to form compounds of low melting point to be sintered. The sintered body using the sintering additives, however, is defective in that strength at a high temperature is deteriorated.
      This invention has been solved the above problem by allowing the sintered body to contain fiber whiskers. In other words, silicon ceramics powder, whisker formation agents to be whisker under heat treatment, sintering additives, and at need whisker formation accelerators, are mixed to be molded into the predetermined shape, and thereafter subjected to whisker formation heat treatment in the non-oxidizing atmosphere to produce whiskers within the molded material, which is densifying-sintered further in the non-oxidizing atmosphere, or the mixed materials are subjected to whisker formation heat treatment in the non-oxidizing atmosphere to thereby produce whiskers. Thereafter, the materials are molded into the predetermined shape and densifying-sintered in the non-oxidizing atmosphere, thereby obtaining the fiber reinforced silicon ceramics sintered body superior in heat resistance, impact resistance, and corrosion resistance.
    • 本发明涉及硅陶瓷烧结体,例如耐热陶瓷烧结体,特别是碳化硅和氮化硅。 ...耐热陶瓷中的碳化硅和氮化硅特别优异地在耐热性,耐冲击性和耐腐蚀性方面是优异的,并且作为高温下使用的涡轮机或柴油发动机的结构材料或部件材料有效地使用 天然气,因此最近在很大程度上对其发展感兴趣。 碳化硅和氮化硅都是共价键合性质的化合物,被认为是难以烧结的材料。 因此,它们不是唯一的,而是添加有烧结添加剂以形成待烧结的低熔点化合物。 然而,使用烧结添加剂的烧结体的缺陷在于高温下的强度劣化。 ...本发明通过使烧结体含有纤维须晶来解决上述问题。 换句话说,将硅陶瓷粉末,在热处理中要晶须的晶须形成剂,烧结添加剂和需要的晶须形成促进剂混合以成型为预定形状,然后在非晶形态中进行晶须形成热处理, 氧化气氛,在非氧化性气氛中进一步致密烧结的成型材料中形成晶须,或者在非氧化性气氛中对混合材料进行晶须形成热处理,从而制造晶须。 此后,将材料模制成预定形状并在非氧化性气氛中致密烧结,从而获得耐热性,耐冲击性和耐腐蚀性优异的纤维增强硅陶瓷烧结体。